Improvement in adjustable chairs



G. WILSON. Adjiisfable Chair. No. 210,733.

Patented Dec. 10-; 1878.

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M nn-r OFFICE.

GEORGE wILsoN, on BROOKLYN, NEW YORK.

IMPROVEMENT IN ADJUSTABLE CHAIRS.

Specification forming part of Letters Patent No. 210,733, dated December 10, 1878 application filed 7' May 9, 1878.

To all whom it may concern:

Be it known that I, GEone-n WVILsoN, of Brooklyn, in the county of Kings and State of New York, have invented an Improvement in Adjustable Chairs, of which the following is a specification:

The nature of this invention relates to an improvement in the construction of adjustable chairs, particularly designed for the use of invalids.

' The invention consists, first, in the peculiar arrangement of certain devices whereby the back and leg sections can be simultaneously adjusted to Varying degrees of inclination; and, second, in the peculiar arrangement and construction of the various parts, as is more fully hereinafter set forth.

Figure 1 is a perspective view, showing the chair adjusted for use as a common easychair. N Fig. 2 is a side elevation, showing position ofparts adjusted as a reclining-chair. Fig. 3 is a bottom plan of the seat-section.

In the drawing, A represents the supportin g-section of a chair, mounted "upon casters a. At the apex of the semicircular side bars of this section A is hung the seat-section B of a chair by means of the hangers (l, pivoted to said frame, as at b.

To the front ends of the sidebars of the seat-frame B is pivoted the leg-section D, to which is in turn pivoted the foot-rest E. To the rear of the seat-section is pivoted, at c, the back-section I, to the side bars of which is pivoted a leg-frame, G, to support the back when the chair is extended as a couch.

H are arm-rests, pivoted at d to the backsection, while their forward ends are pivoted to the upper ends of the bars I, which, in turn, are pivoted to the seat-section, as at e. The lower ends of these bars are connected together by the rod z, with which engages the notched side bars of the adjustable frame J, which is pivoted to the leg-section, as shown.

Notched bars f, pivoted at one end to the leg-section, engage with studs h on the side of the footrest, to secure it in position.

To the rear downwardly-projeating arms of the hangers G are rigidly secured the plates K, in the ends of which are journaled the shaft L, running transversely across the chair. Upon this shaft are rigidly keyed the bevelpinions g. These pinions engage with simi lar pinions m, keyed upon the shafts M, which have bearings in the inwardly-proj ecting arms j on the hangers 0. Threaded upon the shafts M are blocks N, to the outer ends of which are pivoted the adjustingbars O, the forward ends of which are notched to engage with studs 70 on the inner faces of the bars I.

To keep the seat-section in position, and so that the chair will not rock upon its pivotal point of connection with the supportingframe I pivot lock-bars I to the frame A, their forward ends being notched to engage with studs l on the hangers G for that purpose.

All the parts being in connection, as described, a crank-handle attached to one end of the shaft L, and by means of which said shaft is rotated, will adjust the back and leg sections to any desired position, as can readily be seen.

What I claim as my invention is-- 1. In an adjustable chair, the combination of the back and leg sections, pivoted to the seat-frame, with the cross horizontal shaft L, the horizontal scrcwshafts M at the sides of the chair, and the bar 0, having nuts which work back and forth on the screw-shafts between their bcarings, the said parts being adapted to adjust the back-section through the pivoted arm-rests H and bars I, and the leg-section through the frame J, substantially as described and shown.

2. The combination, with the supportingframe A, of the seat-frame 13, pivoted centrally to the supporting-frame by hangers O and adjustably held by locking-bars l, the backsection I, pivoted to the seat-frame and to the arm-rests II, the bars I, pivoted to the forward ends of the arm-rests and to the sides of the seat-frame, the leg-section l), pivoted to the seat-frame and adjustably connected to the lower ends of the bars I by the lockingframe J, and the cross-shaft L, screw-shafts M, and bars 0, for adjusting simultaneously the back and leg sections, all substantially as described and shown.

WVitness my signature hereto this 18th day of March, 1878.

GEOR l-E WILSON. In presence of--- ISAAC S. SIGNER,

turns T. Games. 

